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2009
Bagheri, M., M H. Shih, S J. Choi, J. D. O'Brien, and P. D. Dapkus, "Microcavity Laser Linewidth Close to Threshold", IEEE Journal of Quantum Electronics, vol. 45, issue 8, pp. 945 - 949, 08/2009.
Li, Y., L. Zhang, R. G. Beausoleil, P. D. Dapkus, and A. E. Willner, "Optical data timing skews in on-chip optical WDM interconnects", Optics Communications, vol. 282, no. 9, pp. 1925 - 1929, 2009.
Lu, L., A. Mock, T. Yang, M H. Shih, E H. Hwang, M. Bagheri, A. Stapleton, S. Farrell, J. O'Brien, and P. D. Dapkus, "120 mu W peak output power from edge-emitting photonic crystal double-heterostructure nanocavity lasers", Applied Physics Letters, vol. 94, no. 11: AIP, pp. 111101, 2009.
2008
Bagheri, M., M H. Shih, S. J. Choi, J. O'Brien, and P. D. Dapkus, "Effect of carrier capture on modulation response properties of semiconductor microdisk lasers", IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the, pp. 549-550, Nov., 2008. Abstract
Mock, A., L. Lu, E H. Hwang, J. O'Brien, and P. D. Dapkus, "Numerical investigation of multiple bound States in photonic crystal double heterostructure resonant cavities", IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the, pp. 390-391, Nov., 2008. Abstract
O'Brien, J., M. Bagheri, L. Lu, T. Yang, M H. Shih, A. Mock, and P. D. Dapkus, "Photonic crystal microcavity lasers", Transparent Optical Networks, 2008. ICTON 2008. 10th Anniversary International Conference on, vol. 2, pp. 120-123, June, 2008. Abstract
Dapkus, P. D., Z. Peng, E H. Hwang, Q. Yang, and L. Stewart, "Microresonators for Photonic Integrated Circuits", Optical Fiber communication/National Fiber Optic Engineers Conference, 2008. OFC/NFOEC 2008. Conference on, pp. 1-3, Feb., 2008. Abstract
Li, Y., L. Zhang, M. Song, B. Zhang, J-Y. Yang, R. G. Beausoleil, A. E. Willner, and P. D. Dapkus, "Coupled-ring-resonator-based silicon modulator for enhanced performance", Opt. Express, vol. 16, no. 17: OSA, pp. 13342–13348, 2008.
2007
Lu, L., T. Yang, A. Mock, M H. Shih, E H. Hwang, M. Bagheri, A. Stapleton, S. Farrell, J. O'Brien, and P. D. Dapkus, "60 microWatts of Fiber-Coupled Peak Output Power from an Edge-Emitting Photonic Crystal Heterostructure Laser", Lasers and Electro-Optics, 2007. CLEO 2007. Conference on, pp. 1-2, May, 2007. Abstract
Stapleton, A., S. Farrell, Z. Peng, S-J. Choi, L. Christen, J. O'Brien, P. D. Dapkus, and A. E. Willner, "Low V[sub pi] modulators containing InGaAsP/InP microdisk phase modulators", Applied Physics Letters, vol. 90, no. 16: AIP, pp. 161121, 2007.
Khatsevich, S., D. H. Rich, X. Zhang, and P. D. Dapkus, "Correlating exciton localization with compositional fluctuations in InGaN/GaN quantum wells grown on GaN planar surfaces and facets of GaN triangular prisms", Journal of Applied Physics, vol. 102, no. 9: AIP, pp. 093502, 2007.
Shih, M H., A. Mock, M. Bagheri, N. - K. Suh, S. Farrell, S. - J. Choi, J. O'Brien, and P. D. Dapkus, "Photonic crystal lasers in InGaAsP on a SiO2/Si substrates and its thermal impedance", Opt. Express, vol. 15, no. 1: OSA, pp. 227–232, 2007.
2006
Mock, A., W. Kuang, M H. Shih, E H. Hwang, W. - J. Kim, J. O'Brien, and P. D. Dapkus, "Spectral Properties of Photonic Crystal Double-Heterostructure Resonant Cavities", Lasers and Electro-Optics Society, 2006. LEOS 2006. 19th Annual Meeting of the IEEE, pp. 124-125, Oct., 2006. Abstract
Bagheri, M., M H. Shih, Z-J. Wei, S. J. Choi, J. O'Brien, P. D. Dapkus, and W. K. Marshall, "Linewidth and modulation response of two-dimensional microcavity photonic crystal lattice defect lasers", Photonics Technology Letters, IEEE, vol. 18, no. 10, pp. 1161-1163, May, 2006. Abstract
Shih, M H., A. Mock, E H. Hwang, W. Kuang, J. O'Brien, and P. D. Dapkus, "Photonic crystal heterostructure laser with lattice-shifted cavity", Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on, pp. 1-2, May, 2006. Abstract
O'Brien, J., M H. Shih, T. Yang, M. Bagheri, W. K. Marshall, P. D. Dapkus, and D. G. Deppe, "Photonic Crystal Devices", Nanotechnology, 2006. IEEE-NANO 2006. Sixth IEEE Conference on, vol. 2, pp. 727-730, June, 2006. Abstract
Shih, M H., W. Kuang, T. Yang, M. Bagheri, Z-J. Wei, S J. Choi, L. Lu, J. O'Brien, and P. D. Dapkus, "Experimental characterization of the optical loss of sapphire-bonded photonic crystal laser cavities", Photonics Technology Letters, IEEE, vol. 18, no. 3, pp. 535-537, 1,, 2006. Abstract
Stapleton, A., S. Farrell, H. Akhavan, R. Shafiiha, Z. Peng, S-J. Choi, J. O'Brien, P. D. Dapkus, and W. Marshall, "Optical phase characterization of active semiconductor microdisk resonators in transmission", Applied Physics Letters, vol. 88, no. 3: AIP, pp. 031106, 2006.
2005
Choi, S. J., Z. Peng, Q. Yang, E H. Hwang, and P. D. Dapkus, "A high-Q wavelength filter based on buried heterostructure ring resonators integrated with a semiconductor optical amplifier", Photonics Technology Letters, IEEE, vol. 17, no. 10, pp. 2101-2103, Oct., 2005. Abstract
Kuang, W., J. R. Cao, S J. Choi, J. O'Brien, and P. D. Dapkus, "Modified suspended membrane photonic crystal D3 laser cavity with improved sidemode suppression ratio", Photonics Technology Letters, IEEE, vol. 17, no. 5, pp. 941-943, May, 2005. Abstract
Sadagopan, T., S. J. Choi, S J. Choi, K. Djordjev, and P. D. Dapkus, "Carrier-induced refractive index changes in InP-based circular microresonators for low-voltage high-speed modulation", Photonics Technology Letters, IEEE, vol. 17, no. 2, pp. 414-416, Feb., 2005. Abstract
Kim, H. D., W. G. Jeong, J. H. Lee, J. S. Yim, D. Lee, R. Stevenson, P. D. Dapkus, J. W. Jang, and S. H. Pyun, "Continuous-wave operation of 1.5 mu m InGaAs/InGaAsP/InP quantum dot lasers at room temperature", Applied Physics Letters, vol. 87, no. 8: AIP, pp. 083110, 2005.
Ren, D., and P. D. Dapkus, "Anisotropic Mg incorporation in GaN growth on nonplanar templates", Applied Physics Letters, vol. 86, no. 12: AIP, pp. 121901, 2005.
Ren, D., W. Zhou, and P. D. Dapkus, "Low-dislocation-density, nonplanar GaN templates for buried heterostructure lasers grown by lateral epitaxial overgrowth", Applied Physics Letters, vol. 86, no. 11: AIP, pp. 111901, 2005.
2004
Pataro, L. L., Y. Deng, and P. D. Dapkus, "Asymmetric heterostructure design considerations for high-power laser", Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE, vol. 2, pp. 469-470 Vol.2, Nov., 2004. Abstract
Choi, S. J., K. Djordjev, Z. Peng, Q. Yang, S. J. Choi, and P. D. Dapkus, "Laterally Coupled Buried Heterostructure High-Q>Ring Resonators", IEEE Photonics Technology Letters, vol. 16, issue 10, pp. 2266 - 2268, 10/2004.
Choi, S. J., K. Djordjev, S. J. Choi, P. D. Dapkus, W. Lin, G. Griffel, R. Menna, and J. Connolly, "Microring Resonators Vertically Coupled to Buried Heterostructure Bus Waveguides", IEEE Photonics Technology Letters, vol. 16, issue 3, pp. 828 - 830, 03/2004.
Dapkus, P. D., Low temperature metal-organic chemical vapor deposition growth processes for high-efficiency solar cells. Final technical report, 1 September 1985--30 November 1989, , 2004.
Choi, S J., Z. Peng, Q. Yang, S J. Choi, and P. D. Dapkus, "Tunable microdisk resonators vertically coupled to bus waveguides using epitaxial regrowth and wafer bonding techniques", Applied Physics Letters, vol. 84, no. 5: AIP, pp. 651-653, 2004.
Wei, Z-J., J. R. Cao, Y. Deng, S J. Choi, W. Kuang, J. O'Brien, and P. D. Dapkus, "Room temperature 1.55$μ$m photonic crystal microcavity lasers integrated with AlGaAs oxide aperture", Frontiers in Optics: Optical Society of America, pp. FMK4, 2004.
Khatsevich, S., D. H. Rich, X. Zhang, W. Zhou, and P. D. Dapkus, "Temperature dependence of excitonic recombination in lateral epitaxially overgrown InGaN/GaN quantum wells studied with cathodoluminescence", Journal of Applied Physics, vol. 95, no. 4: AIP, pp. 1832-1842, 2004.
2003
Choi, S J., K. Djordjev, S J. Choi, and P. D. Dapkus, "Microdisk lasers vertically coupled to output waveguides", IEEE Photonics Technology Letters, vol. 15, issue 10, pp. 1330 - 1332, 10/2003.
2002
Djordjev, K., S. - J. Choi, S-J. Choi, and P. D. Dapkus, "Novel Active Swithching Components Based on Semiconductor Microdisk Resonators", Optical Communication, 2002. ECOC 2002. 28th European Conference on, vol. 1, pp. 1-2, Sept., 2002. Abstract
Choi, S J., K. Djordjev, S J. Choi, and P. D. Dapkus, "CH4-based dry etching of high Q InP microdisks", Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, vol. 20, issue 1, pp. 301, 2002.
Djordjev, K., S-J. Choi, S-J. Choi, and P. D. Dapkus, "Gain trimming of the resonant characteristics in vertically coupled InP microdisk switches", Applied Physics Letters, vol. 80, issue 19, pp. 3467, 2002.
Djordjev, K., S-J. Choi, S-J. Choi, and P. D. Dapkus, "Study of the effects of the geometry on the performance of vertically coupled InP microdisk resonators", Journal of Lightwave Technology, vol. 20, issue 8, pp. 1485 - 1492, 08/2002.
Djordjev, K., S-J. Choi, S-J. Choi, and P. D. Dapkus, "Vertically coupled InP microdisk switching devices with electroabsorptive active regions", IEEE Photonics Technology Letters, vol. 14, issue 8, pp. 1115 - 1117, 08/2002.
Djordjev, K., S-J. Choi, S-J. Choi, and P. D. Dapkus, "Microdisk tunable resonant filters and switches", IEEE Photonics Technology Letters, vol. 14, issue 6, pp. 828 - 830, 06/2002.
Djordjev, K., S-J. Choi, W-J. Choi, S-J. Choi, I. Kim, and P. D. Dapkus, "Two-segment spectrally inhomogeneous traveling wave semiconductor optical amplifiers applied to spectral equalization", IEEE Photonics Technology Letters, vol. 14, issue 5, pp. 603 - 605, 2002.
Djordjev, K., S-J. Choi, S-J. Choi, and P. D. Dapkus, "High-Q vertically coupled InP microdisk resonators", IEEE Photonics Technology Letters, vol. 14, issue 3, pp. 331 - 333, 2002.
Djordjev, K., S-J. Choi, S-J. Choi, and P. D. Dapkus, "Active semiconductor microdisk switching devices utilizing gain and electroabsorption effects", Optical Fiber Communications Conference (OFC)Optical Fiber Communication Conference and Exhibit, Anaheim, CA, USA, Opt Soc. America, pp. FA2-1 - FA2-3, 2002.
Djordjev, K., S J. Choi, S-J. Choi, and P. D. Dapkus, "Active Semiconductor Microdisk Devices", J. Lightwave Technol., vol. 20, no. 1: OSA, pp. 105, 2002.
Lee, P-T., J. R. Cao, S J. Choi, Z-J. Wei, J. O'Brien, and P. D. Dapkus, "Operation of photonic crystal membrane lasers above room temperature", Applied Physics Letters, vol. 81, no. 18: AIP, pp. 3311-3313, 2002.
2001
Dapkus, P. D., S J. Choi, S J. Choi, K. Djordjev, T. Sadagopan, and D. Tishinin, "Microresonator devices for DWDM systems", OFC 2001. Optical Fiber Communication Conference and Exhibition. Technical DigestOFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), vol. 3, Anaheim, CA, USA, Opt. Soc. America, pp. WK1 - 1-3, 2001.
Djordjev, K., S J. Choi, W-J. Choi, C. Seung June, and P. D. Dapkus, "Spectral equalizers based on saturable semiconductor optical amplifiers", LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics SocietyLEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242), vol. 1, San Diego, CA, USA, IEEE, pp. 103 - 104, 2001.
Choi, S J., K. Djordjev, S J. Choi, and P. D. Dapkus, "Fabrication of vertically coupled InP microdisk resonators by using smooth, CH/sub 4/-based reactive ion etching methods", LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics SocietyLEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242), vol. 2, San Diego, CA, USA, IEEE, pp. 628 - 629, 2001.
Djordjev, K., S J. Choi, S J. Choi, and P. D. Dapkus, "High-Q vertically-coupled microresonators built by wafer-bonding technique", LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics SocietyLEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242), vol. 2, San Diego, CA, USA, IEEE, pp. 509 - 510, 2001.
2000
Li, R. R., P. D. Dapkus, M. E. Thompson, W. G. Jeong, C. Harrison, P. M. Chaikin, R. A. Register, and D. H. Adamson, "Dense arrays of ordered GaAs nanostructures by selective area growth on substrates patterned by block copolymer lithography", Applied Physics Letters, vol. 76, issue 13, pp. 1689, 2000.
Zhang, X., P. D. Dapkus, and D. H. Rich, "Lateral epitaxy overgrowth of GaN with NH[sub 3] flow rate modulation", Applied Physics Letters, vol. 77, issue 10, pp. 1496, 2000.
Zhang, X., R. R. Li, P. D. Dapkus, and D. H. Rich, "Direct lateral epitaxy overgrowth of GaN on sapphire substrates based on a sparse GaN nucleation technique", Applied Physics Letters, vol. 77, issue 14, pp. 2213, 2000.
Li, R. R., P. D. Dapkus, M. E. Thompson, W. G. Jeong, C. Harrison, P. M. Chaikin, R. A. Register, and D. H. Adamson, "Dense arrays of ordered GaAs nanostructures by selective area growth on substrates patterned by block copolymer lithography", Applied Physics Letters, vol. 76, no. 13: AIP, pp. 1689-1691, 2000.
1999
Lin, C-K., and P. D. Dapkus, "High performance oxide-confined bottom-emitting 850 nm VCSEL array on sapphire substrates", 1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting. IEEE Lasers and Electro-Optics Society 1999 Annual Meeting (Cat. No.99CH37009), vol. 1, San Francisco, CA, USA, IEEE, pp. 259 - 260, 1999.
Djordjev, K., I. Kim, and P. D. Dapkus, "Chirped pulse propagation in saturated traveling wave semiconductor amplifiers", 1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting. IEEE Lasers and Electro-Optics Society 1999 Annual Meeting (Cat. No.99CH37009), vol. 2, San Francisco, CA, USA, IEEE, pp. 786 - 787, 1999.
1998
Kobayashi, N. P., J. T. Kobayashi, W-J. Choi, and P. D. Dapkus, "Single-crystal α-GaN grown on a α-Ga[sub 2]O[sub 3] template layer", Applied Physics Letters, vol. 73, issue 11, pp. 1553, 1998.
Zhang, X., D. H. Rich, C-K. Lin, and P. D. Dapkus, "Cathodoluminescence study of disordering of GaAs/AlGaAs quantum wells using an AlAs native oxide and thermal annealing technique", Journal of Applied Physics, vol. 84, issue 2, pp. 1095, 1998.
Kobayashi, N. P., "Growth of single crystal GaN on a Si substrate using oxidized AlAs as an intermediate layer", Journal of Crystal Growth, vol. 189-190, issue 1-2, pp. 172 - 177, 1998.
Zhang, X., D. H. Rich, J. T. Kobayashi, N. P. Kobayashi, and P. D. Dapkus, "Carrier relaxation and recombination in an InGaN/GaN quantum well probed with time-resolved cathodoluminescence", Applied Physics Letters, vol. 73, no. 10: AIP, pp. 1430-1432, 1998.
Choi, W-J., and P. D. Dapkus, "Self-defined AlAs-oxide–current-aperture buried heterostructure vertical cavity surface-emitting laser", Applied Physics Letters, vol. 73, no. 12: AIP, pp. 1661-1663, 1998.
Bond, A. E., and P. D. Dapkus, "Monolithically integrated surface and substrate emitting vertical cavity lasers for smart pixels", Applied Physics Letters, vol. 73, no. 1: AIP, pp. 19-21, 1998.
1997
Zhu, D. X., S. Dubovitsky, W. H. Steier, K. Uppal, D. Tishinin, J. Burger, and P. D. Dapkus, "Noncollinear four-wave mixing in a broad area semiconductor optical amplifier", Applied Physics Letters, vol. 70, issue 16, pp. 2082, 1997.
Zhu, D. X., S. Dubovitsky, W. H. Steier, J. Burger, D. Tishinin, K. Uppal, and P. D. Dapkus, "Ambipolar diffusion coefficient and carrier lifetime in a compressively strained InGaAsP multiple quantum well device", Applied Physics Letters, vol. 71, issue 5, pp. 647, 1997.
Rammohan, K., D. H. Rich, M. H. MacDougal, and P. D. Dapkus, "Thermal processing of strained InGaAs/GaAs quantum well heterostructures bonded to Si via an epitaxial lift-off technique", Applied Physics Letters, vol. 70, issue 12, pp. 1599, 1997.
MacDougal, M. H., P. D. Dapkus, A. E. Bond, C-K. Lin, and J. Geske, "Design and fabrication of VCSELs with Al/sub x/O/sub y/-GaAs DBRs", IEEE Journal of Selected Topics in Quantum Electronics, vol. 3, issue 3, pp. 905 - 915, 1997.
Kobayashi, N. P., J. T. Kobayashi, P. D. Dapkus, W. - J. Choi, A. E. Bond, X. Zhang, and D. H. Rich, "GaN growth on Si(111) substrate using oxidized AlAs as an intermediate layer", Applied Physics Letters, vol. 71, no. 24: AIP, pp. 3569-3571, 1997.
Lin, C-K., X. Zhang, P. D. Dapkus, and D. H. Rich, "Spatially selective disordering of InGaAs/GaAs quantum wells using an AlAs native oxide and thermal annealing technique", Applied Physics Letters, vol. 71, no. 21: AIP, pp. 3108-3110, 1997.
1996
Bond, A. E., C-K. Lin, M. H. MacDougal, P. D. Dapkus, K. Kaviani, O. Adamczyk, and R. Nottenburg, "Backgating reduction in MESFETs using an AlAs native oxide buffer layer", Electronics Letters, vol. 32, no. 24, pp. 2271-2273, Nov, 1996. Abstract
Dapkus, P. D., M. H. MacDougal, G M. Yang, A. E. Bond, C-K. Lin, and K. Uppal, "Ultralow threshold current lasers", Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on, pp. 357-358, June, 1996.
MacDougal, M. H., G M. Yang, A. E. Bond, C-K. Lin, D. Tishinin, and P. D. Dapkus, "Electrically-pumped vertical-cavity lasers with Al/sub x/O/sub y/-GaAs reflectors", IEEE Photonics Technology Letters, vol. 8, issue 3, pp. 310 - 312, 1996.
1995
Yang, G M., M. H. MacDougal, and P. D. Dapkus, "Ultralow threshold current vertical-cavity surface-emitting lasers obtained with selective oxidation", Electronics Letters, vol. 31, no. 11, pp. 886-888, May, 1995. Abstract
Hummel, S. G., M. H. MacDougal, and P. D. Dapkus, "Extremely wide-bandwidth distributed Bragg reflectors using chirped semiconductor/oxide pairs", Electronics Letters, vol. 31, no. 12, pp. 972-973, Jun, 1995.
Aoki, M., M. Komori, T. Tsuchiya, H. Sato, K. Uomi, and T. Ohtoshi, "High performance InGaAsP/InP strained-layer MQW lasers with reversed-mesa ridge-waveguide structures", Electronics Letters, vol. 31, no. 12, pp. 973-975, Jun, 1995.
MacDougal, M. H., S. G. Hummel, P. D. Dapkus, H. Zhao, and Y. Cheng, "Epitaxial (Al,Ga)InP-oxide distributed Bragg reflectors for use in visible-wavelength optical devices", IEEE Photonics Technology Letters, vol. 7, issue 4, pp. 385 - 387, 1995.
Yang, G M., M. H. MacDougal, V. Pudikov, and P. D. Dapkus, "Influence of mirror reflectivity on laser performance of very-low-threshold vertical-cavity surface-emitting lasers", IEEE Photonics Technology Letters, vol. 7, issue 11, pp. 1228 - 1230, 1995.
Uppal, K., A. Mathur, and P. D. Dapkus, "Strain effects on InGaP-InGaAsP-GaAsP tensile strained quantum-well lasers", IEEE Photonics Technology Letters, vol. 7, issue 10, pp. 1128 - 1130, 1995.
Zhao, H., M. H. MacDougal, P. D. Dapkus, K. Uppal, Y. Cheng, and G M. Yang, "Submilliampere threshold current InGaAs-GaAs-AlGaAs lasers and laser arrays grown on nonplanar substrates", IEEE Journal of Selected Topics in Quantum Electronics, vol. 1, issue 2, pp. 196 - 202, 1995.
1994
MacDougal, M. H., H. Zhao, P. D. Dapkus, M. Ziari, and W. H. Steier, "Wide-bandwidth distributed Bragg reflectors using oxide/GaAs multilayers", Electronics Letters, vol. 30, no. 14, pp. 1147-1149, Jul, 1994.
Frateschi, N. C., M. Y. Jow, P. D. Dapkus, and A. F. J. Levi, "InGaAs/GaAs quantum well lasers with dry-etched mirror passivated by vacuum atomic layer epitaxy", Applied Physics Letters, vol. 65, issue 14, pp. 1748, 1994.
Zhao, H., M. H. MacDougal, N. C. Frateschi, S. Siala, P. D. Dapkus, and R. N. Nottenburg, "High efficiency InGaAs/GaAs single-quantum-well lasers using single-step metalorganic chemical vapor deposition", IEEE Photonics Technology Letters, vol. 6, issue 4, pp. 468 - 470, 1994.
Zhao, H., M. H. MacDougal, K. Uppal, and P. D. Dapkus, "Sub-milliampere threshold InGaAs/GaAs/AlGaAs laser array elements by single step growth on nonplanar substrates", IEEE 14th International Semiconductor Laser ConferenceProceedings of IEEE 14th International Semiconductor Laser Conference, Maui, HI, USA, IEEE, pp. 18 - 19, 1994.
Dubovitsky, S., A. Mathur, W. H. Steier, and P. D. Dapkus, "Gain saturation properties of a polarization insensitive semiconductor amplifier implemented with tensile and compressive strain quantum wells", IEEE Photonics Technology Letters, vol. 6, issue 2, pp. 176 - 178, 1994.
Dubovitsky, S., P. D. Dapkus, A. Mathur, and W. H. Steier, "Wavelength conversion in a quantum well polarization insensitive amplifier", IEEE Photonics Technology Letters, vol. 6, issue 7, pp. 804 - 807, 1994.
Siala, S., H. Zhao, M. Govindarajan, R. N. Nottenburg, and P. D. Dapkus, "High-speed large-signal digital modulation of three-terminal low-threshold strained InGaAs/GaAs lasers", IEEE Photonics Technology Letters, vol. 6, issue 6, pp. 687 - 689, 1994.
1993
Zou, Y., J. S. Osinski, P. Grodzinski, P. D. Dapkus, W. Rideout, W. F. Sharfin, and F. D. Crawford, "Effect of Auger recombination and differential gain on the temperature sensitivity of 1.5 μm quantum well lasers", Applied Physics Letters, vol. 62, issue 2, pp. 175, 1993.
Maa, B. Y., P. D. Dapkus, P. Chen, and A. Madhukar, "Real-time study of the reflection high energy electron diffraction specular beam intensity during atomic layer epitaxy of GaAs", Applied Physics Letters, vol. 62, issue 20, pp. 2551, 1993.
Maa, B. Y., and P. D. Dapkus, "Study of surface reactions in atomic layer epitaxy of GaAs using trimethylgallium by reflectance difference spectroscopy and mass spectroscopy", Thin Solid Films, vol. 225, issue 1-2, pp. 12 - 16, 03/1993.
Sahara, R. T., S. G. Hummel, W. H. Steier, and P. D. Dapkus, "AlGaAs waveguide optically controlled directional coupler latch", Journal of Lightwave Technology, vol. 11, issue 10, pp. 1533 - 1538, 1993.
Zou, Y., J. S. Osinski, P. Grodzinski, P. D. Dapkus, W. C. Rideout, W. F. Sharfin, J. Schlafer, and F. D. Crawford, "Experimental study of Auger recombination, gain, and temperature sensitivity of 1.5 mu m compressively strained semiconductor lasers", IEEE Journal of Quantum Electronics, vol. 29, issue 6, pp. 1565 - 1575, 1993.
Jayaraman, V., A. Mathur, L. A. Coldren, and P. D. Dapkus, "Extended tuning range in sampled grating DBR lasers", IEEE Photonics Technology Letters, vol. 5, issue 5, pp. 489 - 491, 1993.
Osinski, J. S., P. Grodzinski, Y. Zou, and P. D. Dapkus, "Threshold current analysis of compressive strain (0-1.8%) in low-threshold, long-wavelength quantum well lasers", IEEE Journal of Quantum Electronics, vol. 29, issue 6, pp. 1576 - 1585, 1993.
Mathur, A., J. S. Osinski, P. Grodzinski, and P. D. Dapkus, "Comparative study of low-threshold 1.3 mu m strained and lattice-matched quantum-well lasers", IEEE Photonics Technology Letters, vol. 5, issue 7, pp. 753 - 755, 1993.
Frateschi, N. C., P. D. Dapkus, S. S. Ou, J. J. Yang, and M. Jansen, "Low threshold InGaAs/GaAs 45 degrees folded cavity surface-emitting laser grown on structured substrates", IEEE Photonics Technology Letters, vol. 5, issue 7, pp. 741 - 743, 1993.
Kawase, M., E. Garmire, H. C. Lee, and P. D. Dapkus, "Impact of amplified spontaneous emission on carrier density for measurement of optical nonlinearities in GaAs/AlGaAs multiple quantum wells", IEEE Journal of Quantum Electronics, vol. 29, issue 8, pp. 2306 - 2312, 1993.
Frateschi, N. C., and P. D. Dapkus, "Temperature-engineered growth of low-threshold lasers on nonplanar substrates", Sources and Detectors for Fiber CommunicationsProceedings of SPIE, vol. 1788, Boston, MA, USA, SPIE, pp. 46 - 54, 1993.
1992
Frateschi, N. C., and P. D. Dapkus, "Growth of Semiconductor Laser Structures with Integrated Epitaxial Bragg Reflectors on Non-planar Substrates", Metalorganic Vapor Phase Epitaxy, 1992. Sixth International Conference, pp. 13-15, Jun, 1992.
Lee, W-I., S. G. Hummel, and P. D. Dapkus, "Ge DX Center in AlGaAs Grown by Organometallic Vapor Phase Epitaxy", Metalorganic Vapor Phase Epitaxy, 1992. Sixth International Conference, pp. 162-163, Jun, 1992.
Hummel, S. G., Y. Zou, C. A. Beyler, P. Grodzinski, P. D. Dapkus, J. V. McManus, Y. Zhang, B. J. Skromme, and W. I. Lee, "Characteristics of GaAs, AlGaAs, and InGaAs materials grown by metalorganic chemical vapor deposition using an on-demand hydride gas generator", Applied Physics Letters, vol. 60, issue 12, pp. 1483, 1992.
Osinski, J. S., Y. Zou, P. Grodzinski, A. Mathur, and P. D. Dapkus, "Low-threshold-current-density 1.5 mu m lasers using compressively strained InGaAsP quantum wells", IEEE Photonics Technology Letters, vol. 4, issue 1, pp. 10 - 13, 1992.
1991
Hadizad, P., J. H. Hur, H. Zhao, J. S. Osinski, P. D. Dapkus, M. A. Gundersen, and H. R. Fetterman, "GaAs optoelectronic static induction transistor for high frequency pulsed power switching", Pulsed Power Conference, 1991. Digest of Technical Papers. Eighth IEEE International, pp. 200-203, Jun, 1991.
Hur, J. H., P. Hadizad, H. Zhao, S. G. Hummel, J. S. Osinski, P. D. Dapkus, H. R. Fetterman, and M. A. Gundersen, "III-V compund based heterostructure opto-thyristor for pulsed power applications", Pulsed Power Conference, 1991. Digest of Technical Papers. Eighth IEEE International, pp. 206-208, Jun, 1991.
Hummel, S. G., N. C. Frateschi, and P. D. Dapkus, "The Application Of In-situ Laser Reflectometry To MOCVD Growth", Epitaxial Materials and In-Situ Processing for Optoelectronic Devices, 1991/Microfabrication for Photonics and Optoelectronics, 1991. LEOS 1991 Summer Topical Meetings on, pp. 62-63, Jul-2 Aug, 1991.